The nematodes (/ ˈnɛmətoʊdz / NEM-ə-tohdz or NEEM-; Ancient Greek: Νηματώδη; Latin: Nematoda), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad …

Dec 18, 2025 · Nematodes are among the most abundant animals on Earth. They occur as parasites in animals and plants or as free-living forms in soil, fresh water, marine environments, and even such …

The nematode may appear as little more than a biological syringe for its bacterial partner, yet the relationship between these organisms is one of classic mutualism.

A small fraction of all nematode species are parasites of humans, livestock or agricultural crops. Consequently, these have attracted the most attention from Nematology researchers.

Nematodes are invertebrate roundworms that inhabit marine, freshwater, and terrestrial environments. They comprise the phylum Nematoda (or Nemata) which includes parasites of plants and of animals, …

Oct 15, 2025 · Plant-parasitic nematodes like the root-knot nematode cause an estimated $125 billion in global crop losses annually. However, the damage caused by nematodes that infect humans is far …

Jul 23, 2025 · Uncover the world of the nematode, a microscopic roundworm whose immense numbers and diverse functions shape ecosystems, health, and scientific breakthroughs.

Roundworms (nematodes) are bilaterally symmetrical, worm-like organisms that are surrounded by a strong, flexible noncellular layer called a cuticle. Their body plan is simple. The cuticle is secreted by …

The four primary types of nematodes - ring nematode, root lesion nematode, root knot nematode and dagger nematode. Ring nematode. The fatter, short nematode is ring nematode, Mesocriconema …

The main panel shows the phylogeny of the major nematode groups, information about ecological range and presence of parasites (black bars indicate definitive hosts, grey bars intermediate hosts), and …